US3039360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens with remote entrance pupil
Assignee: General Precision Inc
•
Filing: 1958-03-17
•
Granted: 1962-06-19
•
Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
G; G02; G02B; G02B9/00; G02B9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US940894A
Cited
US1053128A
Cited
US1939098A
Cited
DE650907C
Cited
GB449434A
Cited
US2267832A
Cited
US2363788A
Cited
US2760406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |